This study examines the power of cognitive and noncognitive variables to predict students' performance in algebra. We investigated students' prior year's assessment scores and demographic characteristics to predict eighth-grade algebra scores. Using California statewide assessment data, we explored predictive factors in three regression models.…

The concurrent validity of standardized achievement tests (the Stanford 9 and the Iowa Tests of Basic Skills) was examined using data from different school districts nationwide and a latent variable modeling approach. Items in the standardized achievement tests in several content areas were divided into parcels. Parcel scores were used to create…

Validity and reliability issues in standardized testing of students of limited English proficiency (LEP) were studied. Existing data from four different school sites were obtained for LEP and non-LEP students for three different standardized tests, the Stanford Achievement Tests (Ninth edition), the Iowa Tests of Basic Skills, and the Language…

Research reports major concerns over classification and measurement for students with limited English proficiency (LEP). A poor operational definition of the English language proficiency construct and validity concerns about existing language proficiency tests are among these issues. Decisions on including LEP students in large-scale assessments…